Funny that he seems pissed off by those ballgirls as well. Anyone else notice him dogging her on his second serve?
Hahah, noticed that as well... he seemed to be really pissed off by those, ehm, Toothpics
. Good for him, love the guy for it!
Back on topic - it's obvious Raf is still working on improving his serve. He's trying out on things, and why not? Nothing wrong with copying some good shots from your Main Rival, even if it doesn't seem to work immediately.